Answer:
I don't know whether they neccessarily relate to Aphrodite. In the Hymn, Zeus basically decides that Aphrodite needs a taste her own medicine, and makes her fall in love with a mortal named Anchise. Where marriage comes in is that she agrees to marry Anchise (which is done so by meeting his family, telling her parents, accepting a dowry, and make the wedding feast 108ff), but the entire time she is filling Anchise with desire (because that's what Greeks thought women did; make you want them and they want you, but they say 'no' but mean 'yes'). Anchise basically respondes that 'if everything you say is true, then I'll marry you, but in the meantime lets knock boots'.
The hymn seems more to discuss the Greeks views of women and sex, and tells the story of the end of the age of Heros (because after getting a taste of her own medicine she no longer makes the gods mate with mortals).